hi everyone,
it's probably a silly question yet still,
I've installed (i.e. downloaded and copied to icons folder) a "numix circle" icon pack. the thing is, from all other icons and apps I have everything looks fine besides thunderbird.
I have installed thunder... without bindist, just as I did with firefox and the FF icon get replaced out-of the box, but the thunderbird icon does not get automatically replaced.
initially I thought, perhaps the icon pack came with a typo but that's not it...

did anyone else encounter a similar issue? can you tell me how to fix this?
thanks ahead